You are given 17.0 grams of H2. How many moles of H2 is that? You are given 25.7 grams of N2. How many moles of N2 is that?

You are given 17.0 grams of H2. How many moles of H2 is that?

An observation that requires measurement is called quantitative observable or qualitative

Can someone me with 3 and 4 plz. this is for masteries test.

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.